3
CONTENTS
WARNINGS
Page. 4
SYMBOLS USED
5
SAFETY
5
GENERAL DESCRIPTION
6
Documentation included with the unit
6
Available versions and accessories
7
Data plate
8
General description and intended use of the unit
8
Access to main components
10
Description of the main components of the unit
12
Free cooling System - Free cooling
14
Recovery of condensation heat
15
INSTALLATION
16
Transport and handling
16
Receiving and storing the unit
17
Positioning the unit – working space
18
Water connections
19
Low-temperature operation with anti-freeze mixture
20
Guide to sizing of the expansion tank
21
Electrical connections
22
Remote control, local networks and supervision systems
24
Check list for start-up and testing
27
PROGRAMMING AND REGULATION
29
Microprocessor control
29
Introduction
29
Basic control
29
Advanced mP20 control
29
Regulation of cooling capacity
31
Setting the safety devices
32
TECHNICAL DATA
33
Current absorption – Cooling only versions and Heat Pumps
33
Current absorption – Free cooling version
34
Current absorption – Ultra-Quiet free cooling version
35
Dimensions and weights
36
ARA Basic version (cooling only)
- Models 00182 - 00232
37
ARA Heat pump
- Models 00182 - 00232
37
ARA Ultra low-noise version
- Models 00182 - 00232
37
ARA Basic version (cooling only)
- Models 00252 - 00504
38
ARA Heat pump
- Models 00252 - 00504
38
ARA Ultra low-noise version
- Models 00252 - 00504
38
ARA Free cooling version
- Models 00182 - 00232
39
ARA Free cooling Low Noise Level - Models 00152 - 00232
39
ARA Free cooling version
- Models 00252 - 00302
40
ARA Free cooling Low Noise level
- Models 00252 - 00302
40
PROBLEM SOLVING
41
Guide to problem solving
41
Bleeding the water circuit
44
Refrigerant charge
44
Maintenance and cleaning
46
Changing the air filter
46
APPENDIX
Instruction manual for ARA microprocessor controls
Summary of Contents for Aquaflair 00182
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